397308712 has 16 divisors (see below), whose sum is σ = 745611840. Its totient is φ = 198478896.

The previous prime is 397308697. The next prime is 397308731. The reversal of 397308712 is 217803793.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12048 + ... + 30655.

It is an arithmetic number, because the mean of its divisors is an integer number (46600740).

Almost surely, 2^397308712 is an apocalyptic number.

It is an amenable number.

397308712 is a deficient number, since it is larger than the sum of its proper divisors (348303128).

397308712 is a wasteful number, since it uses less digits than its factorization.

397308712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43872 (or 43868 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 397308712 is about 19932.6042453062. The cubic root of 397308712 is about 735.1501148029.

The spelling of 397308712 in words is "three hundred ninety-seven million, three hundred eight thousand, seven hundred twelve".